Hand Symptom

I have a strange symptom that effects both my hands. It really stands out when I'm typing. My hand will just drop. I lose all control of the hand. It's like someone flips a switch and turns it off for a second. It's rather annoying. I'm a programmer by trade, so this little problem really slows me down when I work.

Does anyone else experience this? Is this some strange nuance to PD or should I be searching for another answer?